Ating and dumping bucket



G. JOHNSON.

AGITATING AND DUMPING BUCKET.

APPLICATION FILED MAR. 29, 1922..

b .1 Patented July 25, 1922.

I E 10 i W GJ/mson INVENTOR a, M L I 1 AITQRNEY G. JOHNSON.

AGITATING AND DUMPING BUCKET.

APPLICATION FILED MAR. 28, 1922.

1 Patented July 25, 1922 3 SHEETS-SHEET 2.

ATTO RN EY G. JOHNSON.

AGITATING AND DUMPING BUCKET.

APPLlCATlON FlLED MAH.28,1922.

3 SHEETS-SHEET a.

INVENTOR ATTO R N EY Patented July 25, 192.2.

ares

HEW?

N'SON, OF BRIER HILL, PENNSYLVANIA.

ATING AND DUMPING BUCKET.

Specification of Letters latent. Pastgnted July 25, 1922.

1 filed March 28, 1922.

JOHNSON, a residing at Fayette and nvented new gitating and he following ins for handaterials, and 1g and dump- ;he invention icient means )atch of con- 1 abucket to lischarge are bucket so as f proper conping of the 4 to provide be automatib any one of objects will iption.

e bucket and tower being the stationparatus; f the bucket in section, of

pair of agih one of. the

if one of the side View of showing the ent into dissubstantially to Figure 8 rts when the rts are adapttower which table or preig discharged bin or chute rture is dis Serial No. 547,504.

tributed to various points of the structure being erected. Bucket 1 is mounted in a suitable frame 2 provided with U-shaped guide brackets 3 which fit about guide rails 4 secured in any suitable or preferred manner in tower 5. A cable 6 is secured at one end, at 7, to a beam 8 at the top of the tower and passes over a crown sheave '9 and a guide sheave 10, this cable being wound upon a drum in a known manner for raising and lowering frame 2.

A securing plate 11 is secured to the inner face of bucket 1 at each side thereof and is provided with a central hub 12 which fits into a corresponding recess in an outer plate 13 secured to the outer face of the bucket, this outer plate being provided with a sleeve 14 mounted through a bearing block 15 secured to the side rail of frame 2. A shaft 16 extends across the bucket and through sleeves 14, endwise movement of this shaft being positively prevented by means of a collar 17 secured on one end of the shaft and a bevel gear 18 secured on the other end of the shaft. The recess in plate 13 and sleeve 1a is so shaped as to provide an outwardly tapering space for reception of a suitable packing 19 which is forced tightly about shaft 16 by means of hub 12 of plate 11, the plates being forced toward each other and secured to the bucket by means of bolts 20 and nuts 21. Inner plate 11 is further provided with a plurality of outwardly projecting screw studs 22Which are adapted to pass through the bucket and corresponding openings in plate 13 and to receive securing nuts by means of which the plates may be forced toward each other. This provides a fluid tight closure about shaft 16 so as to effectually prevent leakage about the shaft, the sleeves 14c and shaft 16 providing a rockable mounting for bucket shaft 27 is rotatably mounted in suitable bearings at one side of frame 2 and a bevel pinion 28 is secured on this counter-shaft and meshes with gear 18. A worm wheel '29 is secured on the upper end of shaft 27 and meshes with a worm 30 secured on the armature shaft of an electric motor 31 mounted in frame 2. An electric current is supplied to this motor from any suitable source of supply by means of a cable or cord 32 which passes over a sheave 38 mounted at the top of tower 5, this cable passing beneath a sheave from which is suspended a counter-weight 35 which operates in an enclosing and guide casing 36 secured to one side of tower After passing beneath sheave 3a the cable is secured, at 37, to the top of tower 5 and is extended so as to be connected to any suitable source of electrical energy. When the bucket 1 is raised or lowered in the tower the cable will be maintained under tension by counterweight 35 thus eliminating all possibility of the cable becoming slacked to such an extent as to become entangled in frame 2 or the gearing for driving the agitator. This provides simple and eflicient means whereby the shaft 16 and the blades carried thereby, which constitute the agitator, may be con tinuously driven so as to retain the ingredicuts of the concrete mixture in an intimately mixed condition thus insuring that the mixture, when discharged from the bucket, will be in such condition as to obtain the very best results. This cannot be done with the present type of buckets used due to the fact that as the bucket is raised the vibration causes the heavier ingredients of the mixture to settle to the bottom of the bucket, the lighter ingredients and the water collecting upon the top of the mixture so that when the mixture is discharged from the bucket the ingredients are not in an intimately mixed condition and the mixture is not of the proper consistency. By providing means for thoroughly agitating the ingredients until the instant of their discharge from the bucket I avoid this very serious objection. -While the bucket and the agitator carried thereby are intended more particularly for elevating and discharging concrete which has been 7 previously mixed in a mixer of known type,

in case of necessity, or if desired, the ingredients without being mixed may be placed in the bucket and the agitator will serve to thoroughly mix the ingredients by the time p the bucket reaches its point of discharge.

This is particularly true where the point of discharge is several stories or more from the level at which the ingredients are placed in the bucket. This effects amaterial saving in time which is frequently of importance, as well as effecting a saving in the cost of mixmg of the concrete.

A locking shaft 38 is rockablv mounted on one side of bucket 1 in bearing blocks 39. This shaft is provided at its inner end with a rectangularly disposed locking arm 10 adapted ior engagement inside of a locking oracket li secured to the front face of the adjacent rail 4:. A tension spring 42 is secured at its lower end to a finger 13 secured to shaft 38 and, at its upper end, to bucket 1. This tension spring normally holds shaft in looking position with arm 40 engaging through bracket 41 so as to positively prevent downward and forward movement of bucket 1 about shaft 16, thus locking the bucket in upright or charge receiving and retaining position.

A tripping arm 44 is secured on the outer end of shaft 39 and is positioned to strike the upper wall of a slotted tripping plate 45 secured by means of arms it to tower 5. This plate has a slot 47 for reception of the tripping arm, the upper wall d8 of which is extended inwardly to be struck by the arm during upward movement of the bucket. Contact of arm 1- 1 with the upper wall 4C8 of slot 17 rocks the shaft 38 downwardly so as to withdraw locking arm 4L0 from bracket 4-1 thus releasing the bucket. hen this takes place the bucket is rocked forwardly about shaft 16 by means of a dumping rod 49 slidable through a bearing block 50 secured to the side of the bucket, this rod being provided with a head 51 slida-ble through a bearing block 52 secured to the side of the bucket, which head is forced against bracket 11 by an expansion coil spring 53 mounted about the rod and confined between block 50 anda washer 5 1 mounted about the rod at the outer end of head 51. Referring to Figures 7, 8 and 9, head 51 is provided. in its inner end, with a rectangular recess 55 adapted to receive locking arm 40 when the same is in inoperative position (Figs. 7 and 8). This provides simple and efficient means for holding the locking arm in substantial. parallelism with, and closely adjacent to the side of bucket 1. until the bucket is returned to operative or mate rial receiving position at which time contact of head 51 with bracket 41 forces the head. outwardly so as to release arm 40 which is moved into position to engage through the bracket by means of spring 42 and shaft 48. After arm 4- 1- is rocked downwardly so as to release the bucket the bucket is raised into substantially the position indicated in Figure 1, the arm 44 traveling outwardly in. slot 47 of plate 45. During this operation the weight of the bucket is supported upon a track 56 secured to plate 15, this track being positioned to receive a roller 57 carried by a bracket 58 secured to bucket 1. During the dumping'operation the shaft 16 is rotated, the blades 23 materially assisting in discharging the concrete mixture from the bucket. V

In practice. the supporting structure or tower will be built to any desired height, tripping plates 415and associated parts being placed at the various points where it is desired to discharge the concrete from x angle lever. ilates 45, the ig so shaped a? when the a rack 61 is lever 59 for J. \Vhen the ead of enter- ;e inner edge dges the slot. a slight disardly about permitted by Yld. upright 4 thickness of it of contact '8 is returned vides simple v of the tripon the supbe rendered bucket 1 at y of points. frame 2 is contact with 5 been tilted llS positively the bucket so raised above iciated parts, 1 4% will conas to return 'ial receiving iis manner I sans whereby tmped at the irned to upther batch of described an the agitating rred type of this purpose. Ldicated here- ;truction and ivention may ing from the d Iintend to 9 fall within aims, in this ed form only character dea supporting said structure me, a bucket ift extending ting the same charging and releasably seposition, agishaft within rotating said .et.

2. In an apparatus of the, character described, in combination with a supporting structure, a frame mounted on said structure for movement along the same, a bucket mounted in the frame, a shaft extending throu h the bucket and supporting the same for tilting movement into discharging and receiving positions, means for releasably securing the bucket in receiving position, agitating members secured on the shaft within said bucket, and means for rotating said shaft during travel of the bucket and when the bucket is in discharging position.

4:. In an apparatus of the character described, in combination with a supporting structure, a frame movable in said structure, a bucket tiltably mounted in said frame, means for raising and lowering the frame, a locking shaft rockably mounted on the bucket, co-operating means carried by said shaft and the frame for releasably securing the bucket in upright position, means for normally holding the shaft in operative position, co-operating means carried by the supporting structure and said shaft for rocking the shaft into inoperative position when said bucket reaches a predetermined point in its upward travel, the means carried by the shaft and said structure acting to return the bucket to upright position as it is lowered, and means for tilting the bucket into dumping position acting tohold said shaft in inoperative position during the dumping operation and to release the shaft upon return of the bucket to upright position.

5. In an apparatus of the character described, in combination with a supporting structure, a frame mounted in said structure for vertical movement, means for raising and lowering said frame, a bucket tiltably mounted in the frame, a locking member carried by the frame, a locking shaft rockably mounted on the bucket, a locking arm secured on said shaft and disposed for engagement with said member, means for normally holding the shaft rocked into operative position with the arm in engagement with the locking member, a tripping arm secured on the shaft, a tripping plate secured on said structure, the plate being slotted and the upper wall of the slot "being extended into the 10 the bucket to upright position, the tripping arm and said tripping plate co-operating to return the bucket to upright position upon lowering of the bucket from dumping position, and means for optionally closing the slot in said plate so as to bridge the inner end thereof and prevent contact of said tripping arm with the upper Wall of the slot.

In testimony whereof I affix my signature.

GEORGE JOHNSON. 

